Technical Specifications

FAQ

1. What is the main function of the Bently Nevada 70M303-01-01-00-02?
The 70M303-01-01-00-02 is a Ranger Pro wireless triaxial vibration sensor designed for industrial machinery condition monitoring. It measures vibration in the X, Y and Z axes and also incorporates temperature measurement. The specific configuration includes an M6 × 1 to M8 × 1.25 triaxial alignment stud, ISA100 wireless communication, no battery supplied, and ATEX/IECEx agency approval. It is suitable for monitoring rotating machinery such as motors, pumps, fans and gearboxes where wireless monitoring can reduce the need for conventional field wiring.

2. What does the “01-01-00-02” configuration represent?
The configuration identifies specific options of the Ranger Pro 70M303 sensor. The first “01” specifies the M6 × 1 to M8 × 1.25 triaxial alignment stud mounting option. The second “01” specifies the ISA100 wireless radio option. The “00” indicates that no battery is supplied with this particular configuration. The final “02” identifies the ATEX/IECEx agency approval option. These configuration details are important when replacing or ordering a sensor because the mounting hardware, wireless communication, battery supply and certification can all affect system compatibility.

3. What vibration measurements can this 70M303 configuration provide?
The sensor provides three-axis acceleration measurements with an amplitude range of 0–200 m/s², equivalent to 0–20 g. The Z-axis acceleration frequency range extends from 5 Hz to 10 kHz, while the X and Y axes cover 5 Hz to 4 kHz. It can also provide velocity-related measurements over a 5–2000 Hz frequency range with an amplitude range of 0–50 mm/s. Depending on the monitoring configuration, the system can collect overall values, waveforms, spectra and Peak Demodulation information, allowing the sensor to support both condition trending and more detailed vibration analysis.

4. Why is the triaxial alignment stud important for the 70M303?
The triaxial alignment stud is designed to provide a defined mechanical mounting orientation for the three-axis accelerometer. Because the sensor measures vibration independently along the X, Y and Z axes, maintaining a consistent orientation can be important when comparing vibration data over time or between different machines. The M6 × 1 to M8 × 1.25 alignment stud also provides a practical connection between the sensor and machinery mounting points using compatible threaded interfaces. Proper mechanical installation helps maintain reliable vibration transmission from the machine to the sensing element.

5. Does the 70M303-01-01-00-02 include a battery?
No. The “00” battery option indicates that this particular configuration is supplied without a battery. This is an important distinction when preparing the sensor for field installation. An approved battery compatible with the Ranger Pro platform should be selected and installed according to the applicable installation instructions and hazardous-area requirements. Using an incorrect battery can affect device performance and may create safety or certification issues. For ATEX/IECEx installations, the battery selection and installation procedure should be checked carefully before the sensor is placed into service.

6. Can the 70M303-01-01-00-02 be used in hazardous areas?
Yes. The “02” agency approval option identifies the ATEX/IECEx configuration. This makes the specified configuration suitable for applications where the applicable ATEX or IECEx requirements are met. However, the exact hazardous-area classification of the installation must always be checked against the sensor’s certification and the site requirements. Installation must also comply with the applicable temperature class, zone classification, battery requirements, mounting practices and local regulations. The certification should be verified before installing the sensor in any classified area.

7. What should be checked if the sensor does not communicate with the ISA100 network?
Troubleshooting should begin by confirming that the sensor has been correctly provisioned and that the ISA100 wireless network is operating normally. Since this configuration is supplied without a battery, the installed battery and its connection should be checked carefully before investigating the radio network. The communication path to the compatible gateway should then be evaluated, including network configuration and signal conditions. Physical obstructions, large metal structures and changes to nearby equipment can also affect wireless performance. If the sensor is powered and correctly configured but still cannot communicate, the gateway configuration and wireless network topology should be reviewed.

8. What should be checked if the 70M303 reports abnormal vibration values?
First verify that the sensor is firmly mounted and that the M6 × 1 to M8 × 1.25 alignment stud is properly secured. Because this is a triaxial sensor, the X, Y and Z measurements should be compared to determine whether the abnormality is isolated to one direction or appears across multiple axes. The sensor configuration, measurement frequency range and selected monitoring parameters should also be checked. If the mounting and configuration are correct, compare the current vibration trend with historical data and consider the actual operating condition of the machine. Changes in load, speed, alignment, bearings, lubrication or mechanical looseness can produce genuine changes in vibration, so sensor data should be evaluated together with the machine’s operating condition.